Astrograph with box, Type A-1, metal / glass, made by the Sperti Company, Cincinatti, United States of America, used by the US Army, c. 1940
It has lighting components behind a window. On the front there is a polar scale with Longitude and Latitude, which may be scrolled. The instrument is packed in a cast metal box with screwed-on shelf with the main components. In the bottom there are compartments for parts. The Astrograph was made by the Sperti Company in Cincinatti, USA.